Combination built-in air flow mechanism and led kill chamber

ABSTRACT

Disclosed embodiments relate to a combination axial fan and LED lighting system configured to fit into the footprint of a standard ceiling tile. Disclosed embodiments further include ceiling tiles with a built-in fan and/or LED lighting. The disclosed systems may include a housing container and an axial fan. The fan has a fan cavity including an air diversion mechanism to direct air from the fan cavity toward the lighting and fan components. The inventions include an airflow surface to direct air exiting the fan cavity along an LED light fixture. Moreover, disclosed embodiments include one or more UV light sources which irradiate contaminants as air flows through the ceiling tile. The fixture may be housed in a recessed fixture.

This application is a continuation-in-part of application Ser. No.16/377,750 which is a continuation of application Ser. No. 16/157,874filed on Oct. 11, 2018 issued as U.S. Pat. No. 10,316,141, which is acontinuation-in-part of application Ser. No. 16/040,189, filed on Jul.19, 2018, issued as U.S. Pat. No. 10,221,857, which is acontinuation-in-part of application Ser. No. 15/589,367, filed on May 8,2017, issued as U.S. Pat. No. 10,247,191, which is acontinuation-in-part of application Ser. No. 15/471,762, filed on Mar.28, 2017, issued as U.S. Pat. No. 10,006,619, which claims priority fromProvisional Patent Application Ser. No. 62/439,719 filed Dec. 28, 2016.

FIELD OF THE INVENTION

The present inventions relate to an apparatus having a built-in air flowmechanism and optional LED lighting for maintaining proper air qualityand air movement in an indoor environment. Embodiments of the inventionsfurther include a UV light source which decontaminates air as it flowsthrough the apparatus and thus helps prevent the spread of bacteria,fungus, viruses and/or mold, etc. The apparatus may be adapted to beaccommodated within a ceiling tile, a light fixture or other structure.

BACKGROUND OF THE INVENTION

Indoor spaces such as offices, hospitals, retail stores, educationalinstitutions and the like have two main issues: (1) maintaining properair quality and air movement; and (2) providing adequate lighting.Indoor spaces often have only a single HVAC system that provides air andheat to all of the different sized offices or rooms within a space.Separately, the indoor space utilizes a series of LED lights that may bemounted in ceiling tiles having a dimension of 2 ft.×2 ft. or 2 ft.×4ft. Additionally, the ceiling may include canned, recessed lighting or adropped-lighting fixtures. The present invention could be incorporatedinto those fixtures as well. Finally, it is understood that the presentinvention could be installed in any structure within a building, andcould also be incorporated into a portable unit. The ceiling tile designis very similar to the design used in wall units or floor units. Theconfiguration of the unit does not necessarily change if it is placed ina wall unit, floor unit or ceiling tile. The nature of the presentinvention is not affected by the placement of the apparatus.

There is a need for a system which can move air within an indoor spacewhich supplements the primary HVAC system while at the same timeproviding ample lighting within the indoor space while fitting into thedimensions of a ceiling tile. The system also can provide a coolingeffect on the LED lights to prolong the life-span of the lights.

According to the U.S. Department of Energy (DOE), more than 360 milliontroffers provide general lighting in commercial building interiors. Withtheir standard dimensions of 2 ft.×4 ft., 1 ft.×4 ft, and 2 ft.×2 ft.,these luminaries are popular in dropped, acoustical-tile ceilings with alow ceiling height (less than or equal to 9 feet). The installed trofferbase is predominantly linear fluorescent. In recent years, thedevelopment of LED technology has resulted in a broad selection ofproducts designed to challenge fluorescent, offering up to 70 percentenergy savings, longer life and controllability.

There does exist a problem with LED lights. Excessive heat causes damageto LED lights. LED bulbs that produce white light typically generateexcessive heat that must be conducted away from the LED light system.Proper thermal management is critical to maintaining the originalbrightness and extending the lifespan of LED lights. Unfortunately, dueto component costs, many manufacturers do not include the materials orstructures necessary to provide proper heat transfer, thereby reducingthe performance of the product. For example, most LED lightingmanufacturers use less expensive and less reliable circuit boards thatdo not transfer heat well. Heat build-up in LED lights will damage thematerial, decrease the effectiveness of the light and decrease thelifespan of the lighting unit.

The secret to extending the useful life of an LED fixture is properthermal management. There are several factors that affect the thermalperformance of any fixture including the ambient air temperature, butLEDs specifically suffer from improper thermal design. The displacementof waste heat produced by LED lights is paramount to the longevity ofthe LED lights and can provide an advantage to a company in the emergingLED lighting industry.

The energy consumed by an incandescent bulb produces around 12% heat,83% infrared radiation and only 5% visible light. A typical LED lightproduces 15% visible light and 85% heat. It is important to dissipateheat from LED's through efficient thermal management. The operatingtemperature of an LED light affects the lifespan of the LED. LED lightsdo not tend to fail catastrophically, instead the lumen output of theLED decreases over time. Elevated internal temperatures of the LED causeaccelerated deterioration of the LED lights.

One of the major complaints levied by people working in an office,school, hospital, or commercial space concerns the temperature in thespace. Complaints about temperatures are not just a matter of employees'preferences and tolerances. Temperature has been found to have a directcorrelation to productivity. It is believed that productivity is linkedto the temperature of the building. In addition to temperature issueswithin a building, employees may experience headaches, dizziness,nausea, irritation, cough, fatigue, asthma and other symptoms due towhat has been termed “sick building syndrome.” The primary sources ofindoor air quality problems are believed to be inadequate ventilationand contamination from within the building.

Further, in an office, hospital or other indoor environment, the absenceof adequate ventilation causes irritating or harmful contaminants toaccumulate, which causes worker discomfort, health problems and reducedperformance levels. Such harmful contaminants include bacteria, fungus,mold or viruses that can cause people to become sick. There is a needfor an air circulation mechanism which reduces airborne contaminants.Air purification is an important part of an HVAC system. A typicalindoor HVAC system is not a substitute for source control orventilation.

The inventions address the need for circulating air within a closedenvironment such as a school room, a hospital room or an office. Theinvention provides for a circulating air within that space through aseparate virus or bacteria kill chamber. There is also a need to createwhat is called a virus or bacteria kill chamber. The kill chamber, orkill zone, must be self-enclosed such that any UV light source does notexit the kill chamber. The present invention operates to function as aseparate and supplemental air circulation apparatus separate and apartfrom the HVAC system that provides the heating and cooling for thespecific space.

Moreover, it would be advantageous for an air circulation mechanism tofit within the footprint of a typical ceiling tile.

SUMMARY OF THE INVENTION

The present inventions relate to a ceiling tile with a built-in fan forcirculating air. Embodiments of the inventions may further include oneor more LED strips for lighting the environment in which the ceilingtiles are installed. Further yet, embodiments of the inventions mayinclude one or more UV lights which irradiate the air flow, therebyremoving airborne contaminants such as viruses, superbugs, mold, etc.

In some embodiments of the inventions, an air circulation device maycomprise: a ceiling tile; at least a first fan mounted to the ceilingtile: a first vent in the ceiling tile; and a baffle, mounted to theceiling tile, and defining at least a first airway between the fan andthe first vent. A first LED strip may be mounted to the ceiling tile.Further embodiments may comprise at least a second vent, and a secondLED strip and form a second airway between the fan and the second vent.The air circulation may further comprise at least a second fan, whereinthe first and second fans are configured in-line to direct air into thefirst and second airway. In some embodiments, the first and second fansare configured as air in-takes and air is exhausted through the firstand second vents, and the first and second fans are configured to rotatein opposite directions.

Further yet, embodiments may include an air diversion mechanismconfigured to divert air from the first and second fan to the first andsecond airway. A first UV light source may be mounted in the firstairway. In some embodiments, a second UV light source is mounted in thesecond airway. In other embodiments, the first and second airways arelined with a UV-reflective material. Moreover, the UV-reflectivematerial may be stainless steel. The first and second UV light sourcesmay emit UV-C light waves having a wavelength between 200 to 280nanometers. The first and second UV light sources may be configured tobe activated and deactivate via a remote control. The ceiling tile maybe a drywall structure. In other embodiments, the ceiling tile is anacoustic panel.

The inventions include an air purifying device, comprising: an apparatushaving at least one vent; a fan mounted to a housing within theapparatus; a baffle defining at least a first airway between the fan andthe vent; and at least a first UV light source mounted in the firstairway, wherein the first airway accommodates a UV-reflective materialin at least a portion of the first airway; and wherein a first UV-screenis attached to the first airway to block UV light from exiting theairway. The inventors understood that the air purifying apparatus of thepresent invention may be built into a ceiling tile or similarstructures. In alternative embodiments, the air purifying apparatus maybe built into a light fixture, a recessed light or a drop-light. Infurther alternative embodiments, the air purifying apparatus could bebuilt within or could compliment the structure of the building. While aceiling tile is disclosed as one of the preferred embodiments, the airpurifying device could be included within any structure of a building,including a wall unit, a light fixture, the floor or any othercomplimentary structure of the room such as a piece of art, statue orthe like without departing from the general configuration of the unit.The main purpose of the air purifying apparatus is to act as acomplimentary system to the general HVAC system of a building. The placewhere the unit is installed or mounted is not necessarily critical tothe function of the unit.

In some embodiments the air purifying device comprises at least a secondvent, and wherein the baffle further defines at least a second airwaybetween the fan and the second vent, wherein a second UV light source ismounted in the second airway, wherein the second airway accommodates aUV-reflective material in at least a portion of the second airway, andwherein a second UV-screen is attached to the first airway to block UVlight from exiting the airway.

Further yet, in some embodiments the UV-reflective material creates akill zone which decontaminates air flowing through the first and secondairways. In some embodiments, a second fan is mounted in the apparatus.Some embodiments include an air diversion mechanism configured to divertair into the first and second airways. The first and second fan can beconfigured to rotate in opposite directions. The UV light source may beactivated and de-activated remotely to decontaminate airflow through thefirst and second airway. In some embodiments, the UV light source is aUV-C light source having a wavelength between 200 to 280 nanometers.

The present invention further addresses the need to contain the lightemitted from a UV-C light source within the chamber to create the killzone. An extensive system of barriers are utilized within the killchamber to create a kill zone while precluding the UV-C light fromexiting the kill chamber. The baffles may be coated with a reflectivematerial to enhance the effectiveness of UV-C light within the killchamber.

The present invention combines the benefit of savings in electricalenergy with savings in HVAC energy costs in one unit.

The present invention further includes the benefit of adapting the fanand LED lighting fixture to fit into the foot print of a ceiling tile, alight fixture, a wall or other structure to permit installation of thefixture in room configurations, thus maintaining the aesthetics of theroom. The placement of the apparatus of the present invention within thebuilding is not critical to the operation, function or nature of thepresent invention.

The present invention also includes the benefit of utilizing an ethernetor Wi-Fi (wireless) connection for remote control of the lighter andfan.

The present invention includes the benefit of moving air in an indoorspace to provide more efficient heating of the indoor space.

The present invention may include the stepped fan blade technology ofU.S. Pat. Nos. 10,428,831, 10,273,964 and 10,316,141, which are allincorporated herein by references in their entirety. The stepped-fanblade technology provides the benefit of moving air through the fixturein a more efficient manner, thereby reducing the amount of energyrequired to operate the unit. The stepped blade technology also enablesthe fan to operate at a lower speed, thus utilizing less energy andreducing noise. Finally, the stepped-fan blade technology disperses theair in a uniform manner.

The present invention provides the additional benefit of enhancing thelife of all of the electrical fixtures (both the lighting and fanfixture) by reducing the amount of deterioration on each fixture causedby beat.

The present invention will also enhance the foot-candles' per wattperformance of the lighting optics by reducing the temperature of theLED light. The present invention reduces the problem of the LED lightdegrading over time due to an increase in temperature.

This design of the present invention will also enhance the ability toself-clean the lens on the LED face by utilizing air to push any dust ordebris away from the lighting fixture.

This design of the present invention provides for a competitiveadvantage in that it permits electrical book up in one complete unitthat used to require two separate electrical connections, one for thefan and one for the light.

An added benefit of the present invention provides for a filter to cleanthe air that comes through the perforations of the intake or the screenof the light fixture—therefore creating a cleaner air environment.

The present invention may utilize various color schemes to impactvarious behavior traits of a person. Color is believed to profoundlyaffect the productivity of a person. Research has shown that blue coloris believed to affect a person's mind; yellow is believed to affect aperson's emotions; red is believed to affect a person's body; and greenis believed to affect a person's balance. Utilizing these colors in thepresent invention, the colors can affect a person's behavior. The colorsscheme may be incorporated into the lens, the troffer shelf or the LEDlight.

Finally, the present invention presents a benefit of elimination of anystrobing effect caused by the fan blades interfering with the lightdistribution.

These and other objects and advantages of the present invention, as wellas the details of the illustrative embodiment, will be more fullyunderstood from the following specification and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional view of one embodiment of the combination lightand fan fixture depicting a troffer shelf;

FIG. 2 is a sectional view of one embodiment of the combination lightand fan fixture showing the flow of air;

FIG. 3 is a prospective view of one embodiment of the combination lightand fan fixture depicting a troffer shelf;

FIG. 4 is a sectional view of one embodiment of the combination lightand fan fixture of another embodiment depicting an alternativeembodiment of a troffer shelf;

FIG. 5 is a sectional view of one embodiment of the combination lightand fan fixture depicting an angled shell showing the flow of air;

FIG. 6 is a sectional view of an alternative embodiment of thecombination light and fan fixture depicting another embodiment of theangled deflection mechanism;

FIG. 7 is a sectional view of yet another alternative embodiment of thecombination light and fan fixture with the LED lighting fixturepositioned in a dropped indirect lighting configuration.

FIG. 8 is a perspective view of the embodiment shown in FIG. 7;

FIG. 9 is a perspective view of an embodiment of the present inventionutilizing multiple round grills;

FIG. 9A is a perspective view of the fan grate depicted in FIG. 9;

FIG. 10 is a perspective view of an embodiment of the present inventionutilizing a single grill and lens;

FIG. 10A is a perspective view of the fan grate depicted in FIG. 10;

FIG. 11 is a view of the present invention incorporating multiple fanblades;

FIG. 11A is a view of the present invention incorporating multiple fanblades;

FIG. 12 is a perspective view of an axial fan of the present invention;

FIG. 13 is a bottom view of one embodiment of the combination light andfan fixture;

FIG. 14 is a bottom view of an alternative combination light and fanfixture having 4 LED lights;

FIG. 15 is a bottom view of a ceiling tile, wall tile, or floor tilehaving intake fans, exhaust vents, and LED lighting;

FIG. 16A is a cross section of a ceiling tile, wall tile or floor tilehaving a fan which directs air into a first and second airway;

FIG. 16B is a cross section of a ceiling tile, wall tile or floor tilehaving a UV light source for irradiating air flow through an airway;

FIG. 17 is an exploded view of components of a ceiling tile, wall tileor floor tile having two fans, two LED lighting strips and an upperbaffle for defining airways.

FIG. 18 is a bottom view of a tile, wall tile or floor tile havingintake fans and exhaust vents utilizing a UV light source forirradiating air flowing through the chambers;

FIG. 19 is a perspective view of a tile, wall tile or floor tile havingintake fans and exhaust vents utilizing a UV light source forirradiating air flowing through the chambers;

FIG. 20A is a cross section of a tile, wall tile or floor tile having aUV light source for irradiating air flow through a chamber, a rawintake, exhaust vents and various baffles; and

FIG. 20B is a cross section of a tile, wall tile or floor tile having aUV light source for irradiating air flow through a chamber, a rawintake, exhaust vents and baffles with a reflective material.

FIG. 21 is a cross sectional view of an optional light sourceincorporating the present invention in a canned ceiling light;

DETAILED DESCRIPTION OF THE INVENTION

Embodiments of the present invention may comprise a combination of a fanand an LED light fixture. FIGS. 1 and 2 show side sectional views of anembodiment of the present invention depicting a troffer shelf 12. FIG. 3shows a perspective view of an embodiment having a troffer shelf. Thecombination fan 10 may include a troffer shelf 12 which supports atleast one LED light fixture 20 and a fan 30. The fan 30 is supported bya louvered fan support 18. As shown in FIG. 3, the louvered fan support18 has a lower solid portion 19 and an upper open portion 17 thatincludes several opening and louvers 60 which direct air from the fanchamber 13 along the troffer shelf 12. It is not material to the presentinvention where the solid portion 19 and open portion 17 is located inthe fan support 18. What is important is that there is a solid portion19 of the fan support 18 that braces the fan 30, and an open portion 17that is configured to permit air to flow from the fan chamber 13 to thetroffer chamber 16. The direction of the air flow is not necessarilyimportant to the present invention. What is important is that the fan 30causes air to flow in the vicinity of an LED light fixture 20.

The troffer shelf 12 may have the same general dimensions as a ceilingtile typically 1 ft.×2 ft., 2 ft.×2 ft. or 2 ft.×4 ft. While the FIGS.1-22 depict the present invention taking the form of a ceiling tile,dropped lighting fixture or a canned lighting fixture, the presentinvention could be incorporated into any tile-like structure or lightingfixture incorporated into a building or features within the building.For example, the embodiments of FIGS. 1-22 could easily be incorporatedinto a wall or floor of a building. It could be positioned within apiece of art or a statue. Additionally, the present invention could bepositioned in a light fixture. It does not necessarily matter where thepresent invention is incorporated into a structure. What is important isthat the present invention is self-contained within a troffer shelf 12or similar housing, and that the system operates to augment orsupplement the HVAC system of a building or structure. Therefore, whilecertain embodiments are disclosed in the form of a ceiling tile or lightfixture, the present invention is not limited to the specific structureof a ceiling tile or light fixture. In fact, the present invention couldbe utilized in a ceiling, a wall unit or floor of a structure withoutdeparting from the nature, configuration or operation of the presentinvention.

The LED light fixture 20 is typically positioned along the trofferchamber 16 along the troffer shelf 20 such that light from the fixture20 is not interrupted by the fan 30. The LED light fixture may includean LED lamp 22. The LED light fixture 20 is preferably in the form of astrip which runs the length of the troffer shelf 12 or housing. Whilethe term troffer shelf 12 may be used throughout this application, theterm also refers to a housing or similar structure. The LED lightfixture 20 is secured to the troffer shelf 12 in such a manner to permitair to flow along a substantial portion of the surface area of the LEDlamp 22 and LED light fixture 20. The LED light fixture 20 may include amagnetic attachment mechanism to secure the LED light fixture 20 to thetroffer shelf 12. The magnetic attachment mechanism serves multiplepurposes including the ability to detach the LED light fixture 20 fromthe troffer shelf 12 in a relatively easy fashion. The magneticattachment mechanism further serves to provide a space between the LEDlight fixture 20 and troffer shelf 12 for air to flow through, whichincreases the surface area of the LED light fixture 20 that contacts theair. The greater the surface area of the LED light fixture 20 that comesin contact with the air flow, the faster and more efficient thetemperature reduction of the LED light fixture 20. While LED lightfixtures are discussed throughout this disclosure, it is understood thatother types of lights may be utilized in the invention and benefit fromthe features of the invention.

The fan 30 preferably includes at least an axial fan as shown in FIG.12. Referring back to FIGS. 1, 2 and 3, there may be more than one fanwithin the fan area 13. The blades 32 of the fan 30 force air to moveparallel to a shaft 34 about which the blades 32 rotate. Air flow 40moves axially through the intake of the fan 36 and axially out throughthe outlet 38 of the fan 30. The flow of air is generally linear troughthe intake 36 and the outlet 38. The design of the fan 30 is a functionof the blade configuration 32 that creates a pressure of differentialthat produces airflow 40 across the fan blade 32. The fan 30 may consistof anywhere from 2 to 8 blades. The fan 30 is connected to a motor 51and typically operates at high speeds. The typical speed ofthe axial fanofthe present invention operates between 1800 to 4000 RPM to produceairflow in the range of 85 to 150 cubic feet per minute. While an axialfan is disclosed in the figures of the invention, it is understood thatother types of fans such as a bladeless fan, cross-flow fan orimpeller-type fan may be used as the fan 30 in the embodiments shown inthe figures. Any of those types of fans can be utilized without having adetrimental effect on the function and features of the invention. Theimportant feature of the fan 30 is to move and distribute air within thefan area, regardless of the type of fan that was used.

As shown in FIG. 2, the configuration of the troffer shelf 12 directsthe flow of air from the outlet 38 of the fan 30. Air flows along thetroffer shelf 12 and the troffer baffle 14, along the LED light fixture20. Air passing along the LED light fixture 20 acts to dissipate heatproduced by the LED light fixture 20 which reduces the operatingtemperature of the LED light fixture 20. In essence, the air flowreduces waste heat produced by the LED fixture 20 by conducting the heataway from the LED light fixture 20. It is believed that the airflow inthe current invention can reduce the temperature of the LED lightfixture 20 from approximately 120° F. to approximately 80° F. in thetypical environment found in offices, hospitals, retail stores,educational institutions and the like.

FIGS. 1, 2 and 3 depict a combination LED light fixture 20 and fan 10.The air exiting the outlet 38 of the fan 30 is propelled into the fanchamber 13. The air in the fan chamber 13 as shown in FIG. 3, isdirected by a diversion mechanism 50 so that the air flows throughopenings 17 in the fan support 18. The air flowing through the opening17 is directed by louvres 60 into the light chamber 16, along thetroffer shelf 12, to engage the LED light fixture 20. By directing airfrom the fan 20 along the troffer shelf 12 causes the air to circulatearound the LED light fixture 20 to reduce the temperature of the LEDlight fixture 20. The air flow in the lighting chamber 16 is directed bythe troffer baffle 14 through an exit vent 84 formed by the damper 81.

In embodiments of the present invention, there may be a vent and lensbracket 80. The bracket 80 is affixed to the troffer shelf 12 in such amanner to permit air to flow from the light chamber 16 through an exitvent 84 formed by a damper 81 in the bracket 80. The vent 84 permits theair heated by LED light fixture 20 to exit the light chamber 16. Thebracket 80 also includes a lens bracket 82. The lens bracket 82corresponds with a fan lens bracket 83 to secure a lens 90 in placewithin the combination LED light and fan 10. The lens 90 provides asolid surface to assist with containing any air from the fan 30 suchthat it proceeds along the troffer shelf 12 and the troffer baffle 14 tothe LED light fixture 20 and through the vent 84. A lens 90 is notnecessary to the invention. However, the lens 90 typically made of asomewhat flexible translucent plastic material. There is a mountingmechanism 100 that is used to affix the combination LED light fixture 20and fan to an adjacent ceiling tile or bracket.

Some embodiments of the present invention may incorporate the use ofcolor displayed by the lighting system to affect the environment inwhich the combination LED light 20 and fan fixture 10 may beimplemented. Research has shown that different colors appear to affectbehavioral traits in humans. For example, the color yellow is believedto influence a person's self-confidence; the color red is believed toinfluence a person's physical body, the color blue is believed toinfluence a person's mind and the color green is believed to influence aperson's emotional balance. It is believed that, for example, thecombination of a yellow color with a blue color will stimulate aperson's emotional balance and mind. The different color combinationsmay be incorporated into the present invention in numerous ways. In oneembodiment of the present invention, the colors blue, red, yellow orgreen may be applied to the internal surface of the troffer shelf 12and/or the troffer baffle 14 by means of paint, insert or other knowntechnique. Alternatively, the lens 90 may comprise of the colors blue,red, yellow or green. The colored lens 90 operates to transmit light ofthe lens color in an indoor space. Finally, the LED light fixture 20itself may be configured to generate light in the blue, red, yellow orgreen spectrums by means of the LED lamp 22.

The air exiting from the fan cavity 16 is directed along an airflowsurface on the troffer shelf 12 and troffer baffles 14 air mayalternatively be directed through a cooling chamber, which is not shownbut functions to cool the fan components, as well as, the LED lightingcomponents. The internal surface of the troffer shelf 12 and trofferbaffles 14 may be coated with a Miro-Micro Matt wet paint produced byAlanod. The paint helps to maintain airflow along the surface, as wellas, maintain a clean dust-free surface. The airflow 40 has two generalcomponents. The air that exits the fan cavity 13 generally has a laminarflow along the airflow surface of the troffer shelf 12. As the flow ofair from the fan 30 extends towards the exterior perimeter of thetroffer shelf 12 and troffer baffles 14 through the vent 84, the flowbecomes more turbulent and mixes with the surrounding air. The preferreddirection of the air-flow is such that the intake 36 of the fan 30 drawsair from the lower portion of a space and distributes the air along theupper portion of the space. Air along the lower portion of an area tendsto be cooler than air that resides at the upper portion of an area. Thecooler air is pulled into the fan 30 and distributed from the cavity isused to cool and clean the LED light fixture 20, and/or the LED lightbulb 22.

The combination fan of the present invention may utilize the stepped-fanblade design depicted in the pending patent application Ser. No.14/814,161, 15/043,923 and 15/346,913, each of which is herebyincorporated by reference, in the entirety. The benefits of thestepped-blade design are set-forth in detail in the pending patentapplications referenced herein and need not be repeated in thisprovisional application and are not shown in the drawings. Thestepped-fan blade design greatly improves the air flow characteristicsof the fan 30.

As shown in FIGS. 9, 9A, 10 and 10A, the fan intake 36 may includedecorative perforations and/or a grill 39. The embodiments of FIGS. 9,9A, 10 and 10A may be installed in a ceiling, wall or floor of astructure without departing from the nature, operation or function ofthe present invention. The grills 39 may be of a circular configurationas shown in FIGS. 9 and 9A. Alternatively, the grill may extend thelength of the fan intake 36 as shown in FIGS. 10 and 10A. The fan intake36 may also include a filter (not shown). Alternatively, the filter maybe positioned at the air outlet 38 or at a grill covering thecombination fan 39. The filter serves to clean air flowing through thefan of dust and other fine particles. The filters may be removed forcleaning or replacement on a periodic basis. The embodiments shown inFIGS. 10 and 10A are more adapted to accommodate a filter.

In some embodiments of the inventions, the combination fan and LED lightsystem 20 further includes an air diversion mechanism 50. The airdiversion mechanism 50 is positioned within the cavity of the fanchamber 13. The physical configuration of the air diversion mechanism 50is such that it directs air exiting the fan outlet 38 through thelouvered openings 17 or diffuser in the louvered fan holder 18. In someembodiments, the air diversion mechanism 50 is in the shape of a prismas shown in FIGS. 1 through 7. Alternatively, the air diversionmechanism 50 may be in the shape of a pyramid (FIG. 8), cone, pentagon,triangle or other suitable shape to divert air from the fan chamber 13,through the openings 17 and into the troffer chamber 16 along the LEDlight fixture 20. The air diversion mechanism directs air towardsopening 17 along louvered vents 60 positioned along the inside fanchamber 13. The vents 17 may include louvres 60 to assist in directingthe air in the desired direction. Positioned within the air diversionmechanism 50 is a ballast housing 51 for LED lighting ballast, driversand wires. The ballast housing 51 houses the wiring for both the LEDlighting system and the fan to allow for a single hook-up to theelectrical outlets or connections positioned within the ceiling.

The air exiting from the fan cavity 13 is directed along an airflowtroffer shelf 12 to the troffer baffle 14. Air may alternatively bedirected through a cooling chamber, which is not shown, but functions tocool the components located in the ballast housing 51, as well as, theLED lighting components.

As shown in FIG. 2, air 40 enters the fan 30 and is expelled by the fanblades 32 into the air chamber 13. Air flow in the fan chamber isgenerally laminar. Air is forced into the air chamber 13 and is directedby a louvre 60 through an opening in the fan chamber 13 into the lightchamber 16. The air (shown in arrows) has generally a laminar flow alongthe troffer shelf 12 and troffer baffle 14. As the flow of air from thefan 30 extends towards the exterior perimeter of the housing in the vent84, the flow becomes more turbulent and mixes with the surrounding airsuch that the air exiting through the damper 81 is more turbulent innature. The preferred direction of the air-flow is such that the intake36 of the fan 30 draws air from the lower portion of a space anddistributes the air along the upper portion of the space. Air along thelower portion of an area tends to be cooler than air that resides at theupper portion of an area. The cooler air is pulled into the fan 30 anddistributed from the cavity is used to cool and clean the LED lightfixture 20, the LED cover 24 and/or the LED light bulb 22. In analternative embodiment, the direction of the airflow may be reversed.

Turning to FIGS. 4,5,6 and 7, refer to alternative embodiments to theembodiment of FIGS. 1, 2 and 3. An alternative embodiment comprises acombination of a fan 30 and LED light fixture 20. FIGS. 4, 5, 6 and 7show views of different embodiments of the present invention. Theembodiments may be incorporated into a ceiling, wall, floor or accessorystructure of a room.

FIG. 4 depicts an alternative design of the troffer shelf and thetroffer baffle 14. In the alternative design, air is propelled from thefan 30 into the fan chamber 13. The air from the fan 30 is deflected bya diversion mechanism 50, through the opening 17 and directed by louvres60 into the light chamber 16. The louvres 60 are configured to directthe air from the fan along the troffer shelf 12 and along the trofferbaffles 14. By directing air from the fan 30 along the troffer shelf 12causes the air to circulate along LED light fixtures 20. The air flowhelps to reduce the temperature of the LED light fixture 20. The airflow is directed by the troffer baffle 14 through an exit vent 84 formedby the damper 81, in the lens bracket 80.

In FIG. 4, the troffer shelf 12 has more of a squared-shape. The troffershelf 12 and the troffer baffle 14 intersect at generally right anglesto each other. The fan 30 is positioned in generally the same positionas demonstrated in FIG. 3. The fan chamber 13 includes a diverter 50 todirect air exiting the fan 30 through the open portion 17 of the fanchamber 13. Louvers 60 direct the air passing through the open portion17 of the fan chamber 30 into the light chamber 16. Air flows along thetroffer shelf 12 and the troffer baffle 14 passed the LED light fixture20. Air passing along the light fixture passes along the plurality ofLED light fixture 20 to dissipate the heat in the LED light fixture 20.The air follows a path along the air baffle through the vent 84 out ofthe light chamber 16.

The bracket 80 includes a damper 81 and lens bracket 82. The embodimentincludes a lens 90 which acts to diffuse the light emitted from the LEDlights. There is a mounting mechanism 100 used to affix the combinationLED light fixture 20 and fan to an adjacent ceiling tile or bracket.

The interior surface of the troffer shelf 12 and troffer baffle 114 maybe coated with a Miro-Micro Matt wet paint produced by Alanod. The painthelps to maintain airflow along the surface, as well as, maintain aclean dust-free surface. The paint can be applied in any of the colorsdiscussed above to affect the environment.

As shown in FIGS. 5 and 6, the combination fan 110 includes a housing112 which supports at least one LED light fixture 120 and a fan 130. Thehousing may be the same dimensions as a ceiling tile typically 2 ft.×2ft. or 2 ft.×4 ft. The LED light fixture 120 is preferably positionedalong the periphery of the housing 112 such that light from the fixture120 is not interrupted by the fan 130. The LED light fixture includes anLED light bulb 122.

The alternative embodiments of the combination LED light fixture and fan110 utilize an internal baffle 114. The internal baffle 114 serves todirect air within the troffer cavity 116 and provide support for the LEDlighting 120. The embodiments depicted in FIGS. 5 and 6 include a fan130 that directs air through a fan exit 138 in the fan chamber 113. Thefan chamber 113 includes an air diverter 150 which may take on manydifferent shapes, such as a prism shown in FIG. 5 or a trapezoidal shapeshown in FIG. 6. Air from the fan chamber 113 is directed by thediverter 150 through the open portion 117 of the fan support 118. Theair flowing through the open portion 117 of the fan support 118 isdirected by louvres 160. As shown in FIG. 6, the air is directed by thelouvres 160 into the baffle chamber 116 along the baffle 114 across theLED light 120. The air passing across the LED light 120 is directed bythe baffle 114 through the exit vent 184.

In FIG. 5, the baffle 114 guides air flowing through the openings 117 inthe fan chamber 113 (which is directed by the baffles) along the LEDlight fixture 120. The air serves to reduce the temperature of the LEDlight fixture 120 and extend the life of the LED light fixture 120. Thebaffle 114 guides the air flow from the LED light fixture 120 throughthe exit vent 184.

The fan 130 preferably includes an axial fan. The blades 132 of theaxial fan force air to move parallel to a shaft 134 about which theblades 132 rotate. The flow of air 140 is axially through the intake ofthe fan 136 and axially out through the outlet 138 of the fan 130. Theflow of air is linear trough the intake 136 and the outlet 138. Thedesign of the fan 130 is a function of the blade configuration 132 thatcreates a pressure of differential that produces airflow 140 across thefan blade 132. The axial fan 130 may consist of anywhere from 2 to 8blades. The axial fan 130 is connected to an energy source (not shown)and typically operates at high speeds. The typical speed of the axialfan of the present invention operates between 1800 to 4000 RPM toproduce airflow in the range of 85 to 150 cubic feet per minute. Thecombination fan 142 of the present invention may utilize the stepped-fanblade design depicted in the pending patent applications referencedabove.

The fan intake 136 of FIGS. 5 and 6 may include decorative perforationsand/or a grill as shown in FIGS. 9 and 10. The air intake 136 may alsoinclude a filter (not shown). Alternatively, the filter may bepositioned at the air outlet 138 or at a screen covering the combinationfan 142. The filter serves to clean air flowing through the fan of dustand other fine particles.

One embodiment of the combination fan and LED light system 110 furtherincludes an air diversion mechanism 150. The air diversion mechanism 150is positioned within the fan chamber 113 of the fan 130. Looking at FIG.14, the air diversion mechanism 150 is in the shape of a prism as shownin FIGS. 5, 6 and 13. Alternatively, the air diversion mechanism 150 maybe in the shape of a pyramid (FIG. 14), cone, pentagon, triangle orother suitable shape to divert air to the LED components and into theoffice space. The air diversion mechanism 150 directs air towards vents117 positioned along the fan cavity 113. The vents 117 may includelouvres 160 to assist in directing the air in the desired direction.Additionally, the air diversion mechanism may have vents to permit aportion of the air circulated by the fan to enter the diversionmechanism 150 to provide a cooling effect on the ballast housing 151.

The air exiting from the fan cavity 116 is directed along an airflowsurface on the troffer baffle 114 air may alternatively be directedthrough a cooling chamber, which is not shown but functions to cool thefan components, as well as, the LED lighting components. The internalsurface of the troffer baffle 114 is preferably coated with a Miro-MicroMatt wet paint produced by Alanod. The paint helps to maintain airflowalong the surface, as well as, maintain a clean dust-free surface. Theairflow 140 has two general components. The air that exits the fancavity 113 generally has a laminar flow along the airflow surface of thelower housing portion 114. As the flow of air from the fan 130 extendstowards the exterior perimeter of the housing 112 through the vent 114,the flow becomes more turbulent and mixes with the surrounding air. Thepreferred direction of the air-flow is such that the intake 136 of thefan 130 draws air from the lower portion of a space and distributes theair along the upper portion of the space. Air along the lower portion ofan area tends to be cooler than air that resides at the upper portion ofan area. The cooler air is pulled into the fan 130 and distributed fromthe chamber where the air functions to cool and clean the LED lightfixture 120, and/or the LED light bulb 122.

An embodiment of the combination LED light fixture and fan 200 in whichthe LED light fixtures 220 are directed toward the ceiling is depictedin FIGS. 7 and 8. The combination LED light fixture and fan 200 in FIG.7 includes a fan 220. The fan 230 may include an invented axial fan, orany fan that serves the purpose of distributing air in a relativelyquiet fashion. The fan 230 includes an air inlet 236 and air exit 238.There is a fan chamber 216. Air is drawn from the indoor environment,through the air inlet 236 and propelled by the fan through the fan exit238 into the fan chamber 213. There is a diverter 250 positioned withinthe tan chamber 213 to direct air from the fan through an open portion117 of the fan support 218. The open portion 217 may include louvers 260to guide the air from the fan chamber 213 into a troffer cavity 216.

The combination LED light fixture and fan 210 has a domed shell 292.While a domed-shaped shell 292 is shown in some embodiments, any shapedshell may be utilized and still practice the invention. The shell 292serves as a troffer or housing. The shell 292 is configured to directair from the troffer cavity 216 along the LED light fixtures 220 andthrough the exit vent 284. A lens 29 is positioned on top of the shell292. The combination LED light fixtures 220 may be configured to directlight upward toward the ceiling or downward toward the shell 292. Theshell 292 may be made of a solid material or alternatively a translucentmaterial to permit light to penetrate the shell 292 into the room. Thecombination LED light fixture 220 is supported from the ceiling by oneor more mounting cables 294. The mounting cables 294 may be configuredto accommodate power cables to supply power to the fan 230 and LED lightfixtures 220.

The combination LED light fixture and fan as shown in all theembodiments ofthe present invention may use a hard-wired controlmechanism to control both the light 20 and fan 30. The invention may usean ethernet connection and remote control to activate the fan 30 and LEDlight fixture 20. Alternatively, a wi-fi (wireless) connection may beused in connection with a remote control to control the LED light 20 andfan 30. The remote control feature is configured to adjust the intensity(or color) of the LED light fixture 20 and the speed of the fan 30.

The embodiments of the inventions shown in FIGS. 1 through 7 show a fanthat is independent from the HVAC system ofthe building in which thecombination LED lighting fixture 10 may be installed.

As shown in FIGS. 11 and 11A, the combination fan may include two ormore fans 30. In the multiple fan configuration, it is beneficial thatadjacent fans rotate in different directions to provide a more evendistribution of air along the fan 30. It is important to note that theadjacent fans rotate in opposite directions. As shown in FIG. 11A, themultiple fans may all rotate in the same direction.

FIG. 12 depicts a fan 30 and 130 that may be used in embodiments of theinventions.

Various aspects of this disclosure may include components which areimplemented directly into a ceiling grid, ceiling tile, a wall unit, aseparate ornate structure or a floor, as seen for example in FIG. 15. Itis contemplated that an exemplary tile 1501 may be sized as 1′×4′;2′×2′; or 2′×4′, although a person of skill in the art would understandthat any appropriately sized ceiling tile may be used in accordance withthe present inventions. Likewise, a person of ordinary skill in the artwould recognize that the exemplary tile 1501 could be sized to fitbetween wall joists when it is implemented in a wall or between floorjoists when it is incorporated in a floor structure. The tile 1501 couldalso be installed in an ornamental piece of such as wall art, statue orinstallation. Moreover, the tile 1501 could be constructed of acousticalmaterial, Styrofoam, fiber, wood, metal, translucent plexiglass,plastic, sheet rock or drywall structures as are known to be used inindustrial, commercial or residential environments. In essence, the unitcould be installed in a ceiling wall or floor without departing from thenature and spirit of the invention.

In embodiments of the inventions, tile 1501 may have one or more fans1502 and vents 1503 cut into the tile 1501, sometimes referred to hereinas a ceiling panel. Panel cuts may be made or manufactured usingwaterjet cutting, die cutting, laser cutting, CNC routing, CNC knifecutting, reciprocated knife cutting or any other known techniques forcutting through tiles. Vents 1503 may take the form of elongated slot(s)extending near the edge of tile 1501, although other shapes are alsocontemplated. For example, FIG. 15 shows two elongated vents on the tile1501's top edge, and two additional vents along the bottom edge. Aperson of skill in the art would understand that additional arrangementsare contemplated. Optional LED strips 1504 may be included and mayextend between the one or more fans 1502 and vents 1503.

As seen in FIG. 16A, which is a cut-away side view of embodiments of theinventions, an upper baffle 1610 and one or more lower baffles 1620,1621, may act together to define one or more airway(s). For example, airmay pass from a fan 1502, along airway(s) 1630, 1631 (e.g. a firstairway to the left and a second airway to the right), to vents 1503.Upper baffle 1610 may comprise an apex portion 1615 which is formed inclose proximity to fan(s) 1502 and/or 1503. Embodiments in which an apexportion 1615 extends into proximity with fan(s) 1502 and/or 1503 providethe advantage of improved airflow: that is because apex portion 1615forces air to split evenly towards the left and right side. In theabsence of apex portion 1615, the direction of rotation of fan(s) 1502and/or 1503 may lead to uneven air distribution. The apex portion 1615performs a similar function to air diversion mechanism 50 describedabove. Indeed, a person of skill in the art would recognize that the airdiversion mechanism 50 (See e.g. FIG. 1) may be included in theembodiment of FIG. 16. Preferably, fan(s) 1502 take in air, which isreleased out through vents 1503. In such an arrangement, fan(s) 1502 actas an air intake and vents 1503 act as an exhaust. A person of skill inthe art would recognize that it is also possible for fan(s) 1502 and/or1503 to be configured to act as an exhaust, rather than an intake. Inembodiments where LED strips 1504 are included, the flow of air throughairways 1630 and 1631 may act to cool the LED strips 1504. Where two ormore fans 1502 are included in an embodiment, it may be desirable, asalready described above, to have them rotate in opposite directionsrelative to one another, e.g. one may spin clockwise while the otherspins counterclockwise.

Embodiments of the invention further include the functionality ofirradiating germs out of the air using UV light. Such embodimentsprovide the advantage of not only circulating air in an environment, butalso killing viral, bacterial and fungal species which may be living inthe environment's air. It is known the UV light degrades organicmaterials, but inorganic materials (including metals or glass) are notaffected by UV light. Therefore, UV light is effective for reducingorganic matter which may be airborne in the air. Reducing airbornecontaminants may be important in any environment, but especially inhospitals or schools, which may be particularly susceptible to disease.Regardless of the environment, disinfecting the air of contaminants ishelpful to reduce the spread of disease. It is preferable to reduce oreliminate contact with UV lighting because UV light can be harmful tohumans and/or animals (particularly over prolonged durations).

Embodiments of the invention therefore provide the advantage ofpositioning a UV light source in the ceiling tile, where the UV rays maybe contained in the ceiling tiles. For example, FIG. 16B illustratesexemplary UV light source(s) 1640 which are mounted inside the upperbaffle 1610 and thus irradiate organic matter residing in air as airflows from the fan to the vent. A person of skill in the art wouldrecognize that UV light sources include a power source and mayoptionally include an on/off controller (not shown). The UV light source1640 may be activated by an on/off button, or it may be controlled bythe remote control feature described further herein. In such anembodiment, a remote control may include the ability to activate ordo-activate a UV light source 1640.

In some embodiments, light source(s) 1640 may emit UV-C light, which hasa wavelength of approximately 200 to 280 nanometers. A person of skillin the art would recognize the UV-C light is optimal for irradiatingairborne contaminants (such as viruses, superbugs, mold, and the like)in most environments. In embodiments of the invention, the upper baffle1610 and/or the lower baffle 1620/1621 may be made of or coated with, aUV-reflective material. A person of skill in the art would recognizethat a UV-reflective material could include a metal, such as stainlesssteel, or a specialty coating. Lining the airway with a reflectivematerial and/or reflective coating provides the advantage of creating a“kill chamber,” or “kill zone” inside the airways 1630, 1631, where UVrays may bounce to increase their exposure to air passing through theairways 1630, 1631, and by extension., increase the irradiation oforganic matter contained in the air.

Furthermore, some embodiments of the inventions may include a UV-screenin the form of flange 1650 which is attached to the end of airways 1630and/or 1631 to shield UV rays from exiting the airways and entering anenvironment (such as a room or commercial space). In this way, includingUV-screen(s) 1650 at the end of an airway Although FIG. 16B illustratesa UV source 1640 in an embodiment which is built into a ceiling tile, itshould be understood that the disclosed UV source and “kill chamber” maybe implemented in any of the embodiments disclosed herein.

FIG. 17 shows an exploded view of components ofthe invention. Forexample, the embodiment of FIG. 17 shows a tile 1501 in which there arecut-outs for fans 1502 and vents 1503. Upper baffle 1610 is shown, sizedto fit onto tile 1501. Furthermore, FIG. 17 shows exemplary LED strips1504 (including power cord) which may be mounted on the tile 1501'sunderside.

Various aspects of this disclosure may include components which areimplemented directly into a structure such as a ceiling tile, wall panelor other structure such as a floor panel. As seen for example in FIG.18. It is contemplated that an exemplary panel 1801 may be sized as1′×4′; 2′×2′ or 2′×4′ if used in a ceiling tile, although a personskilled in the art would understand that any appropriately sized tilemay be used in accordance with the present inventions. Moreover, panel1801 could be made from acoustical material, fiber, wood, metal,translucent plexiglass, styrofoam, plastic, sheet rock or drywallstructures as are known to be used in industrial, commercial orresidential environments. Alternatively, the panel 1801 may take theform of a light or other ornamental feature such as a statue or thelike.

In embodiments of the inventions, panel 1801 may have one or more fans1802 and vents 1803 cut into the panel 1801, or positioned in theceiling grid, sometimes referred to herein as a ceiling panel. Panelcuts may be made or manufactured using waterjet cutting, die cutting,laser cutting, CNC routing, CNC knife cutting, reciprocated knifecutting or any other known techniques for cutting through tiles. Vents1803 may take the form of elongated slot(s) extending along the edge ofpanel 1801, although other shapes are also contemplated. For example,FIG. 18 shows the vents 1803 as an elongated slot that runs along theentire length of the panel 1801. A person of skill in the art wouldunderstand that additional arrangements are contemplated. Optional LEDstrips (not shown) may be included, and may extend between the one ormore fans 1802 and vents 1803.

As seen in FIG. 20A, which is a cut-away side view of embodiments of theinventions, upper baffles 2010, 2011 and one or more lower baffles 2020,2021, may act together to define one or more airway(s). For example, airmay pass from a fan 2002, along airway(s) 2030, 2031 (e.g. a firstairway to the left and a second airway to the right), to vents 2003.Upper baffles 2010, 2011 may form air deflection mechanism 2015 which isformed in close proximity to fan 2002. Alternatively, the deflectionmechanism 2015 may consist of a separate structure. Embodiments in whichan air diversion mechanism 2015 extends into proximity with fan 2002provides the advantage of improved airflow: that is because the airdiversion mechanism 2015 forces air to split evenly towards the airchambers 2030 and 2031. In the absence of air diversion mechanism 2015,the direction of rotation of fan 2002 may lead to uneven airdistribution. The air diversion mechanism 2015 performs a similarfunction to air diversion mechanism 50 described above. Indeed, a personof skill in the art would recognize that the air diversion mechanism 50(See e.g. FIG. 1) may be included in the embodiment of FIGS. 20A and20B. Also included within the air flow airways 2030 and 2031 are aseries of baffles 2040, 2042 and 2044. The baffles operate to direct theair flowing through the airways 2030 and directs the air through anoutlet vent 2003. The baffles 2040, 2042 and 2044 form what is calledthe kill zone. There may be included in the embodiment shown in FIG. 20Aare UV light systems 2060. The UV lights 2060 operate to irradiatefungi, bacteria and viruses form the air circulating through the system2001. The UV lights operate within a wavelength of approximately 200 to280 nanometers. The bulbs used in the UV light are typically referred tothe UV-C light spectrum. The UV-C bulbs operate along the specificwavelength of ultra-violet lights or light diffusing optical fibers. TheUV-C light sources are typically referred to as T-5, T-8 or similarlytype of LED lighting fixtures. The embodiment in FIGS. 20A and 20B mayinclude an indicator light (not shown) to indicate when the UV-C lightsource is operating within the chambers 2030 and 2031. While the UV-Clight source is shown in FIGS. 20A and 20B, the LED light 20 depicted inFIGS. 1-7, 13 and 14 above could be replaced with the UV-C light source.

The UV-C lights 2060, emitting light along a wavelength of 200 to 280nanometers, have been deemed to have potentially harmful effects onhumans. The baffles 2040, 2042 and 2044 operate to maintain the lightemitted by the UV-C light fixture 2060 within the fixture so thatlittle, if any, UV-C light is emitted from the fixture through the fans2002 or the vent 2003. The baffles 2040, 2042 and 2044 may be positionedon the opposite side of the airway 2031. Preferably, fan(s) 2002 take inair, which is released out through vents 2003. In such an arrangement,fan(s) 2002 act as an air intake and vents 2003 act as an exhaust. Aperson of skill in the at would recognize that it is also possible forfan(s) 2002 and/or 2003 to be configured to act as an exhaust, ratherthan an intake. In embodiments where UV-C lighting is included, the flowof air through airways 2030 and 2031 may act to irradiate the air toeliminate germs, viruses, bacteria, fungi or the like. Where two or morefans 2002 are included in an embodiment, it may be desirable, as alreadydescribed above, to have them rotate in opposite directions relative toone another, e.g. one may spin clockwise while the other spinscounterclockwise.

In the embodiment shown in FIG. 20B, the light source(s) 2060 may emitUV-C light, which has a wavelength of approximately 200 to 280nanometers. A person of skill in the art would recognize the UV-C lightis optimal for irradiating airborne contaminants (such as viruses,superbugs, mold, bacteria, fungus and the like) in most environments. Inembodiments of the invention, the upper baffle 2010 and/or the lowerbaffle 2020 and 2021 may be made of, or coated with, a UV-reflectivematerial. A person of skill in the art would recognize that aUV-reflective material could include a metal, such as stainless steel,or a specialty coating. Lining the airway with a reflective materialand/or reflective coating provides the advantage of creating a “killchamber,” or “kill zone” inside the airways 2030 and 2031, where UV raysmay be deflected within the “kill chamber” to increase their exposure toair passing through the airways 2030 and 2031, and by extension,increase the irradiation of organic matter contained in the air.Furthermore, in the embodiment of FIGS. 20A and 208, the baffles 2040,2042 and 2044 located in airways 1630 and/or 1631 operate to (1) shieldUV rays from exiting the airways and entering an environment (such as aroom or commercial space) and (2) to increase the intensity the air isexposed to the UV-C light emitted by the UV-C light source 2060, and (3)increase the duration of air flowing through the airway 2030 and 2031 isexposed to the UV-C light. The baffles 2040, 2042 and 2044 operate toextend the time that the air flows along the kill zone thus increasingthe number of germs that are killed within the fixture. An actual testof a unit utilizing the UV-C light source 1640 was conducted. The studywas conducted to verify the unit's microbial reduction efficacy ofaerosolized contaminants. The unit was mounted on the ceiling in asealed 11′ 10″× 11′ 10″×8′1″ (1125 cu.ft.) controlled environment room.The unit's fan and UV lamps were powered on and allowed to warm up overthe course of 2-hours as part of conditioning. Aliquots of themicroorganisms were added to a pre-sterilized nebulizer reservoir. Thetesting room was sealed; all equipment activation was performedremotely. The nebulizer was powered to aerosolize the microbialsuspension. Following 5 minutes, the UV-C light source and fans werepowered on. Samples of the air were collected immediately after unitactivation using Bio-aerosol air impinger (Biosampler, SKC, Inc.). Theair sample were collected over the course of three minutes. Air sampleswere collected again following 1 and 2-hours following start. The systemwas deactivated, and the room was exhausted for 25 minutes before entryfor sample retrieval and subsequent analysis. The study was repeated asdescribed with only the fans running and then again with the unitcompletely powered off. All collected samples were analyzed intriplicate at the minimum as per standard lab operating procedures.Analysis was conducted as per laboratory's accredited ISO17025:2005methodology: bacteria were analyzed as per SM 9215 (APHA 2012) and MS-2as per EPA 1602. Analysis was conducted using calibrated and/orvalidated Instruments to traceable standards (NIST). All QC was withinmethod acceptance limit. No general environmental conditions arespecified in the standard or have been identified that could affect thetest results or measurements.

The test results demonstrated the following:

The test resulted in a finding that 99.6% of K. pneumoniae waseliminated from the air after 1-hour of operation, and 99.998% of K.pneumoniae was eliminated from the air after 2-hours of operation. Therewas a 30% reduction of K. pneumoniae from the air after 1-hour ofoperation when the UV light source was not activated. The tests furtherfound that 98.4% of the MSZ virus was eliminated from the air after1-hour of operation and 99.6% of the MSZ virus was eliminated after2-hours of operation. There was a 27.2% reduction of MSZ virus from theair after 1-hour of operation when the UV light source was notactivated.

There is yet another configuration for the present invention embodied ina can or recessed light fixture as shown in FIGS. 21 and 22. As depictedin FIG. 21, the recessed UV-C fixture 3001 is in the form of a recessedor can lighting that is adapted to accommodate a light and fitrelatively flush to a ceiling. The UV-C fixture 3001 may either besurface mounted or flush mounted to a ceiling 3004. The shape of theUV-C fixture 3001 may be round, square, rectangular, oval or any shapedesired by a designer. The UV-C fixture 3001 may incorporate some or allof the features depicted in preceeding FIGS. 1-20. FIG. 21 shows acut-away side-view of the embodiment having an upper baffle 3010 and alower baffle 3020. The upper baffle 3020 may be a nominal sealed fixturewith an outside diameter of 4, 6, 8 or 10 inches with a nominal heightbetween 6 to 12 inches. There is an inner baffle 3012 that defines ainterior tunnel or kill chamber 3030 between the inner baffle 3012 andthe outer baffle 3010. The diameter or size of the inner baffle isgenerally between one to two inches less than the diameter or size ofthe outer baffle 3010. Thus, the kill chamber or tunnel 3030 isgenerally between one to two inches wide.

The recessed UVC fixture 3001 includes a fan 3002 housed in a fanchamber. The fan 3002 operates to move air along a first airway 3031.The air is moved along an air deflection mechanism 3015 which may be inclose proximity of the fan 3002 or it may be positioned in proximity tothe the air chamber 3031 as disclosed in the embodiment of FIG. 21. Thedeflection mechanism 3015 may be incorporated into the outer baffle 3010or the deflection mechanism 3015 may be constructed of a separatestructure. The fan 3002 may be an inverted fan pulling air from belowthe ceiling 3004 through a decorative exterior screen 3006 into the fanchamber housing the fan 3002. The invented fan 3002 of the preferredembodiment acts to impart a constant pressure into the fan chamber tomove air from below the ceiling 3004 through the decorative screen 3006and fan 3002 into the air chamber 3031. The air is eventually pushedinto the kill chamber 3030 and through the vent 3003 back into aposition below the ceiling 3004. There is a seal 3007 between theoutside baffle 3010 and the ceiling 3004 to ensure that the air leavingthe kill chamber 3030 through the vent 3003 does not escape from the airpurification fixture 3001. There is a light protection plate 3007 whichoperates to direct the UV-C light into the kill chamber and prohibit theUV light emitted from the UV-C light system 3060 from exiting the killchamber 3030.

The kill chamber 3030 includes a UV-C light system 3060 which mayinclude one or more UV light sources. The UV-C light system 3060 operateto irradiate fungi, bacteria and viruses form the air circulatingthrough the system 3001. The UV-C light source 3060 operates within awavelength of approximately 200 to 280 nanometers. The bulbs used in theUV-C light source 3060 are typically referred to operate within the UV-Clight spectrum. The UV-C bulbs operate along the specific wave length ofultra-violet lights or light diffusing optical fibers. The UV-C lightsources 3060 are typically referred to as T-5, T-8 or similarly type ofLED lighting fixtures. The embodiment in FIG. 21 may include anindicator light (not shown) to indicate when the UV-C light source 3060is operating within the chambers 3030.

The UV-C lights 3060, emitting light along a wavelength of 200 to 280nanometers, have been deemed to have potentially harmful effects onhumans. There are screens 3042 and 2044 which operate to maintain thelight emitted by the UV-C light fixture 3060 within the fixture so thatlittle, if any, UV-C light is emitted from the fixture through the fans3002 or the vent 3003. The baffles 3007 may be positioned on theopposite side of the airway 3030. Preferably, fan(s) 3002 take in air,which is released out through vents 3003. In such an arrangement, fan(s)3002 act as an air intake and vents 3003 act as an exhaust. A person ofskill in the art would recognize that it is also possible for fan(s)3002 and/or 3003 to be configured to act as an exhaust, rather than anintake. In embodiments where UV-C lighting is included, the flow of airthrough airway 3031 to airway or kill chamber 3030, where in airway 3030may act to irradiate the air to eliminate germs, viruses, bacteria,fungi or the like. Where two or more fans 3002 are included in anembodiment, it may be desirable, as already described above, to havethem rotate in opposite directions relative to one another, e.g. one mayspin clockwise while the other spins counterclockwise.

In the embodiment shown in FIG. 21, the UV-C light source(s) 3060 mayemit UV-C light, which has a wavelength of approximately 200 to 280nanometers. A person of skill in the art would recognize the UV-C lightis optimal for irradiating airborne contaminants (such as viruses,superbugs, mold, bacteria, fungus and the like) in most environments. Inembodiments of the invention, the outer baffle 3010 and/or the innerbaffle 3020 may be made of, or coated with a UV-reflective material. Aperson of skill in the art would recognize that a UV-reflective materialcould include a metal, such as stainless steel, or a specialty coating.Lining the airway with a reflective material and/or reflective coatingprovides the advantage of creating a “kill zone” inside the kill chamber3030, where UV rays may be deflected within the kill chamber 3030 toincrease their exposure to air passing through the airways 3030, and byextension, increase the irradiation of organic matter contained in theair. Furthermore, the screens 3007 operate to (1) shield UV rays fromexiting the airways and entering an environment (such as a room orcommercial space) and (2) to increase the intensity the air is exposedto the UV-C light emitted by the UV-C light source 3060, and (3)increase the duration of air flowing through the airway 3030 is exposedto the UV-C light. The baffles 3042 and 3044 operate to extend the timethat the air flows along the kill zone thus increasing the number ofgerms that are killed within the fixture. The UV-C fixture 3001 may alsoinclude a light fixture (not shown) that may be incorporated around theair intake 3006.

While specific combinations of elements are disclosed in specificembodiments, it should be understood that any combination of thedifferent features may be utilized in the combined fan. It is understoodthat elements from each of the embodiments may be utilized in any or allof the other embodiments without departing from the spirit of theinvention.

The foregoing disclosure and description of the invention areillustrating and explanatory thereof, and various changes in the size,shape and materials as well as in the details of illustratedconstruction may be changed without departing from the spirit of theinvention.

It is understood that the invention is not limited to the specificembodiments disclosed and that modifications and other embodiments areintended to be included within the scope of the appended claims.Although specific terms are employed herein, they are used in a genericand descriptive sense only and not for purposes of limitation.

What is claimed is:
 1. An air purifying device, comprising: a panelhaving at least one vent and one fan portion; a cover attached to thepanel defining at least an airway between the fan portion and the vent;a fan positioned in the fan portion adapted to guide air to the airway;a UV light source mounted in the airway, wherein the UV light source isa UV-C light source emitting light having a wavelength between 200 and280 nanometers; an air diversion mechanism positioned in the airway,wherein the air diversion mechanism is configured to direct air guidedby the fan to a UV-C kill chamber housing the UV light source; and abaffle is positioned in the UV-C kill chamber to act as a barrierpreventing light emitted from the UV light source from exiting the airpurifying device.
 2. The air purifying device of claim 1, wherein theUV-C kill chamber accommodates a UV reflective material.
 3. The airpurifying of claim 2, further comprising a second baffle positioned inthe UV-C kill chamber to act as a barrier preventing light emitted fromthe UV-C light source from exiting the air purifying chamber.
 4. The airpurifying device of claim 1, wherein the cover has an interior surfacepositioned along the airway which includes a UV reflective material. 5.The air purifying device of claim 1, further comprising a light on thecover which illuminates when the UV-C light source is activated.
 6. Theair purifying device of claim 4, wherein further comprising a secondbaffle featuring a UV reflective material positioned in the UV-C killchamber.
 7. The air purifying device of claim 2, wherein the firstbaffle and second baffle create a kill zone which kills bacteria,viruses or microbes present in the air guided by the fan to the airway.8. The air purifying device of claim 2, further comprising a second fanmounted to the fan portion of the ceiling tile and in-line with thefirst fan.
 9. The air purifying device of claim 8, wherein the first andsecond fan are configured to rotate in opposite directions.
 10. The airpurifying device of claim 1, further comprising an actuator to controlthe operation of the UV light source.
 11. The air purifying device ofclaim 10, wherein the actuator is a remote control unit.
 12. The airpurifying device of claim 1, further comprising an artistic expressiondisplayed on the panel.
 13. The air purifying device of claim 12,further comprising light source affixed to the panel to illuminate theartistic expression.
 14. An air purifying device comprising: a recessedfixture configured to fit into a ceiling wherein the recessed fixtureincludes a housing portion, a fan portion and a vent portion; a housingportion of the recessed fixture including an upper baffle and a lowerbaffle, the upper baffle and lower baffle form a UV-C kill chamber; afan positioned in the fan portion of the recessed fixture, wherein saidfan directs air into a fan chamber, UV-C kill chamber and through thevent portion; a UV-C light fixture positioned within the UV-C killchamber wherein the UV-C light fixture emits light in the spectrum tokill viruses within the UV-C kill chamber; and a light protection platepositioned in proximity to an exit of the kill chamber at the vent toprohibit the UV light emitted from the UV-C light source from exitingthe kill chamber.
 15. The air purifying device of claim 14, furthercomprising an LED light positioned on housing portion.
 16. The airpurifying device of claim 14, wherein the UV-C light source emits UV-Clight waves having a wavelength between 200 and 280 nanometers.
 17. Theair purifying device of claim 16, wherein the UV-C light source operatesto kill at least 99% of K. pneumoniae from the air.
 18. The airpurifying device of claim 14, further comprising a screen affixed to thehousing in the proximity to the fan.
 19. The air purifying device ofclaim 14, wherein UV-C light fixture emits light capable of killingbacteria, viruses and microbes.
 20. The air purifying device of claim18, further comprising plurality of UV-C light fixtures forming a killzone within the UV-C kill chamber.